EP 4067780 A2 20221005 - ONLINE OPTIMIZATION OF VARIABLE FREQUENCY DRIVE COMPRESSION EFFICIENCY
Title (en)
ONLINE OPTIMIZATION OF VARIABLE FREQUENCY DRIVE COMPRESSION EFFICIENCY
Title (de)
ONLINE-OPTIMIERUNG DER EFFIZENZ VON KOMPRESSION MIT VARIABLEM FREQUENZANTRIEB
Title (fr)
OPTIMISATION EN LIGNE DE L'EFFICACITÉ DE COMPRESSION D'ENTRAÎNEMENT À FRÉQUENCE VARIABLE
Publication
Application
Priority
US 202117218546 A 20210331
Abstract (en)
A method for adjusting compression efficiency for an HVACR system having a variable-frequency drive (VFD) is disclosed. The method includes determining a first compression efficiency, determining an operating point, determining a region of an operating map when a difference between the operating point and a previously determined operating point exceeds a predetermined threshold, adjusting a VFD input to a first input based on the region of the operating map, and controlling the VFD using the first input for a predetermined period of time. The method also includes determining a second compression efficiency and an operation restriction, adjusting the VFD input to a second input based on the operation restriction and a difference between the first compression efficiency and the second compression efficiency, and controlling the VFD using the second input. The method also includes utilizing machine learning control techniques to control several system variables to optimize the compression efficiency.
IPC 8 full level
F25B 49/02 (2006.01); B60H 1/00 (2006.01)
CPC (source: CN EP US)
B60H 1/00014 (2013.01 - CN); B60H 1/00642 (2013.01 - CN); B60H 1/3204 (2013.01 - CN); B60H 1/3211 (2013.01 - EP); B60H 1/3222 (2013.01 - EP); B60H 1/3232 (2013.01 - EP); F24F 11/86 (2017.12 - US); F25B 49/025 (2013.01 - EP); B60H 2001/3238 (2013.01 - EP); B60H 2001/3272 (2013.01 - EP); F25B 2500/18 (2013.01 - EP); F25B 2500/19 (2013.01 - EP); F25B 2600/021 (2013.01 - EP); F25B 2600/0253 (2013.01 - EP); F25B 2600/23 (2013.01 - EP); Y02B 30/70 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 4067780 A2 20221005; EP 4067780 A3 20230104; CN 115139734 A 20221004; US 11549717 B2 20230110; US 2022316747 A1 20221006
DOCDB simple family (application)
EP 22165434 A 20220330; CN 202210336271 A 20220331; US 202117218546 A 20210331